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  • @A.B Perhaps I should change the Title - it seems incorrect. They are not name-inode maps are they? Would be good to know what they are really called. Your first point is a good one as find is intended to navigate the tree in forward order only? Commented Dec 31, 2019 at 10:27
  • @A.B The crux of the question is that ls lists directory contents - so . and .. are contained within a directory but I don"t think they really are else find would list them too. Find only lists . but this is not really contained in the directory its just a notation for the current directory. A satisfactory answer would point to some formal specification which describes this. Commented Dec 31, 2019 at 10:34